Work trestle



Dec. 2, 1947. l. WITKEN WORK TRESTLE Filed July 2, 1946 ISADOBE.

Patented Dec. 2, 1947 .zai aas leaders Eitk n. $111M a m- Applicationairlift, 1945, 352th! 51919.5 131? (Cllififlmfi) 5 Claims. 1 The presentinvention relates; tornew and-useful improvements in work trestles of atype com monly known as a carpenter's trestle, and designed particularlyfor useby paper hangers.

Animportant object of the present invention is .to provide an adjustabletrestle of this :character :and one in which the :partsmay be foldedinto a compact form, when not in use.

A further object of the invention is to provide an adjustable lockingdevice for the legs of the trestle and which is also used for lockingthe parts of the trestle in its folded position.

Another object is to provide a device of this character of simple andpractical construction, which is strong and durable, which may be easilyand quickly moved from its folded position into its open position, andwhich at the same time is inexpensive to manufacture and otherwise welladapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction andoperation, as more fully hereinafter described and claimed, referencebeing had to the accompanying drawing forming part hereof, wherein likenumerals refer to like parts throughout, and in which:

Figure 1 is a perspective view showing the trestle in its open position.

Figure 2 is an end elevational view.

Figure 3 is an enlarged perspective view of one of the locking members.

Figure 4 is a perspective view of the trestle in its folded position.

Referring now to the drawing in detail, wherein for the purpose ofillustration I have disclosed a preferred embodiment of the invention,the numerals 5 and 6 designate a pair of rails which are preferablyconstructed of inexpensive wood and of substantially rectangular shapein crosssection, the rails being placed in side-by-side relation andretained in assembled relation by a pair of U-shaped metal slides 1 forlongitudinal sliding adjustment of the rails relative to each other.

Each of the rails is formed at its outer lower edge with longitudinallyspaced notches 8 in which the upper ends of legs 9 are received, a pairof the legs being positioned at each end of the rails.

One pair of legs are pivoted to the outer end of the rail 5 by means ofbraces l0 and the other pair of legs are similarly pivoted to the outerend of the rail 6 by braces H, the braces being positioned on the innersides of their respective legs and arranged to fold the legs against theouter '2 sides of the rails when the trestle is inlts folded position.

Each pair of legs is connected tau-each 'other'by folding braces 12 'tosecure the lower ends 'of the legs :in outwardly inclined position withrespect to the rails.

"The upper ends of the legs are connected to each otherby anadjustablebrace l3 which comfprises a pair of substantially L-shaped members [4secured to the respective legs and having their ends arranged inoverlapping relation and formed with aligned horizontal slots 15 inwhich a pin i6 is received for slidably connecting the members to eachother for extensible adjustment. The members M are secured in aretracted position by means of a pivoted latch ll carried by one of themembers l4 and having a notch I8 engageable with a pin l9 carried by theother of said members to lock the members against sliding movement intotheir extended position.

From the foregoing it will be apparent that by releasing the latch I!from the pin IS, the upper ends of the legs 9 may be moved laterallyoutwardly from the notches 8 of the rails and the brace l2 folded topermit swinging of the legs 9 and braces Ill against the sides of therails from the position as shown in Figure 1 of the drawing to itsfolded position as shown in Figure 4.

The rails 5 and 6 are secured in longitudinally adjusted positionrelative to each other by means of a locking catch 20 having an arm 2|pivoted to the inner side of one of the rails and formed at its free endwith an inverted U-shaped resilient member 22 adapted for frictionalengagement over the upper edge of the other of said rails, as shown moreclearly in Figure 1 of the drawing.

To one of the braces I0 is pivoted a bracket 23 for swinging downwardlyinto a horizontal position as shown in Figure 1 to support one end of apaper hangers straight edge 24 thereon, when the straight edge is not inuse on a table for trimming paper in the usual manner.

The bracket is swung upwardly in a recess 25 in the brace II] when notin use and the free end of the bracket is formed with a clip 26 to gripthe brace. The recess forms a stop for the pivoted end of the bracket tolimit its downward swinging movement.

Having thus described my invention, what I claim is:

1. A collapsible trestle of the class described comprising a pair ofrails connected to each other for extensible adjustment, said railshaving 1ongitudinally spaced notches therein, legs having their upperends selectively received in said notches, and braces connecting thelegs to the rails and arranged to fold the legs against the sides of therails.

2. A collapsible trestle of the class described comprising a pair ofrails connected to each other for extensible adjustment, said railshaving longitudinally spaced notches therein, a pair of legs at each endof the trestle, and braces pivotally connecting the legs to the railsfor folding the legs against the sides of the rails, said legs havingtheir upper ends selectively received in said notches when in openposition.

3. A collapsible trestle of the class described comprising a pair ofrails connected to each other for extensible adjustment, said railhaving longitudinally spaced notches therein, a pair of legs at each endof the trestle, braces pivotally connecting the legs to the rails forfolding the legs against the sides of the rails, said legs havingagainst the sides of the rails, said legs having their upper endsselectively received in said notches when in open position, andextensible braces connecting the legs of each pair to each other when inopen or folded position.

5. A collapsible trestle of the class described comprising a pair ofextensible rails having 1onitudinally spaced notches in their lowerportions, a pair of legs at each end of the trestle, braces pivoted atone end to the rails and pivoted at their other ends to the legs toconnect the leg to the rails for folding against the sides of the rails,said legs converging at their upper ends and selectively received insaid notches, and an extensible brace for each pair of legs and securingthe upper ends of the legs against spreading movement when in either anopen or folded position.

ISADORE WITKEN.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Beland Apr. 1, 1919

